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Crimson
@crimson
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Joined: Jan 16, 2024
Last seen: Jan 28, 2026
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Topics: 4 / Replies: 300
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RE: Grant 13kW Aerona3 - issues getting zones to temp

Update on this. It irked me that the plant room pump had to be on 1/3 not 2/3 so reached out to plumber and asked if the Grant ASHP speed had changed...

1 year ago
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Air Source Heat Pumps (ASHPs)
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RE: Grant 13kW Aerona3 - issues getting zones to temp

It seems opening them back up does reduce the temperature. Which makes me wonder if the rate at which the water passing through is too fast? Certain...

1 year ago
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Air Source Heat Pumps (ASHPs)
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RE: Grant 13kW Aerona3 - issues getting zones to temp

Out of interest, does anyone have an idea why in the hottest performing room, turning the rads down (basically closing down the lock shield equivalent...

1 year ago
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Air Source Heat Pumps (ASHPs)
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RE: Grant 13kW Aerona3 - issues getting zones to temp

So now I’ve come to the conclusion the rads are now correctly sized (did hope so as according to calcs they’d be very much oversized, just purely phys...

1 year ago
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Air Source Heat Pumps (ASHPs)
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RE: Grant 13kW Aerona3 - issues getting zones to temp

Going to be a struggle, already complaints upstairs is too hot at 19-20C. Ive now had to turn all the hidden Drayton balancing down to 2/6. And have t...

1 year ago
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Air Source Heat Pumps (ASHPs)
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RE: Grant 13kW Aerona3 - issues getting zones to temp

Thanks James, it’s a 13Kw. It’s definitely cycling. Only difference this time is hits 20c rather than 18.5c after radiator upsizing was done recentl...

1 year ago
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Air Source Heat Pumps (ASHPs)
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RE: Grant 13kW Aerona3 - issues getting zones to temp

Thanks James, I do wonder about that LLH. It appears the challenge Ive always had still remains. The Eskimo rads seem to work very well at low tem...

1 year ago
Forum
Air Source Heat Pumps (ASHPs)
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RE: Grant 13kW Aerona3 - issues getting zones to temp

As a summary I had numerous issues with the heat engineers/plumbers on a project that was an extension and full re wire/re plumb and re insulate proje...

1 year ago
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Air Source Heat Pumps (ASHPs)
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RE: Grant 13kW Aerona3 - issues getting zones to temp

@kenbone I’m Suffolk based

2 years ago
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Air Source Heat Pumps (ASHPs)
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RE: Grant 13kW Aerona3 - issues getting zones to temp

that’s ideally what I’d like to have done to (once current plumbers sort the rad sizing under the contract, I don’t want them touching anything else)....

2 years ago
Forum
Air Source Heat Pumps (ASHPs)
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RE: Grant 13kW Aerona3 - issues getting zones to temp

Hi Ken, lagging is done just used an old photo for the detail of pipes. I’m hoping for rad upsize replacement then will look later in the year for rem...

2 years ago
Forum
Air Source Heat Pumps (ASHPs)
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RE: Grant 13kW Aerona3 - issues getting zones to temp

4 days later, with guests over the weekend I left things mostly alone. I did end up changing the secondary pump speed to 1/3 as lock shields became a...

2 years ago
Forum
Air Source Heat Pumps (ASHPs)
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